These things are really awesome all across the frequency range and don't get strident UNLESS you turn up the volume way too much. For reference, I listen to them just a little above "half the volume" in my iPhone 5.Edited by Elektrospeed - 5/3/13 at 3:35pm

I'd say the amperiors have more body, but the v-modas have more depth.

I've also had both and agree with this. I personally find the M80's to be less fatiguing and a bit more laid back, hits deeper/heavier but slower, which is more for my genre of music (RnB and hiphop), but the Amperiors were definitely much punchy/energetic and would probably be much more suited for rock or edm.